HD6417709SF100B Renesas Electronics America, HD6417709SF100B Datasheet - Page 400

• Manufacturer Part Number: HD6417709SF100B
• Description: MCU 32-Bit SuperH RISC ROMLess 1.7V/3.3V 208-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of HD6417709SF100B

• Package: 208LQFP
• Family Name: SuperH
• Maximum Speed: 100 MHz
• Operating Supply Voltage: 1.7|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: ROMLess
• Number Of Programmable I/os: 96
• Interface Type: IrDA/SCI/SCIF/UDI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Operating Temperature: -20 to 75 °C
• Number Of Timers: 3

Rev. 5.00, 09/03, page 354 of 760
Figure 11.6 Example of DMA Transfer Timing in the Direct Address Mode in Dual Mode
Note: In transfer between external memories, with DACK output in the read cycle, DACK
(2) In indirect address transfer mode, the address of memory in which data to be transferred is
CKIO
A25 to A0
CSn
D31 to D0
RD
WEn
DACKn
(Transfer Source: Ordinary Memory, Transfer Destination: Ordinary Memory)
stored is specified in the transfer source address register (SAR3) in the DMAC.
Consequently, in this mode, the address value specified in the transfer source address
register in the DMAC is read first. This value is temporarily stored in the DMAC. Next,
the read value is output as an address, and the value stored in that address is stored in the
DMAC again. Then, the value read afterwards is written to the address specified in the
transfer destination address; this completes one DMA transfer. 16-byte transfer is not
possible.
Figure 11.7 shows an example. In this example, the transfer destination, the transfer
source, and the storage destination of the indirect address are 16-bit external memories,
and transfer data is 16 or 8 bits. Figure 11.8 shows an example of the transfer timing.
output timing is the same as that of CSn.
Data read cycle
Transfer source
(1st cycle)
address
Transfer destination
Data write cycle
(2nd cycle)
address